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SAN DIEGO, CALIFORNIA - MARCH 30: Landen Roupp #65 of the San Francisco Giants pitches against the San Diego Padres during the first inning at Petco Park on March 30, 2026 in San Diego, California. (Photo by Orlando Ramirez/Getty Images)

The San Francisco Giants have been searching for consistency all season. Just when they string wins together, something breaks down. Monday night at Oracle Park provided another familiar reminder of that pattern.

A 6-2 loss to the Arizona Diamondbacks dropped the Giants back to their losing ways, and the culprit this time was not the pitching or the offense. It was the defense.

Landen Roupp pitched well enough to win. The scoreline did not reflect that.

Roupp Takes the Loss on the Chin

GettyLanden Roupp of the San Francisco Giants.

Roupp had given the Giants a 2-1 lead heading into the fifth inning and was in position for a quality start. Then the errors came. Willy Adames threw wide on what should have been a routine play to open the inning. Two batters later, a Ketel Marte fly ball caught a tricky wind and skipped past Casey Schmitt in left field. Two unearned runs scored. The momentum shifted. Roupp’s afternoon ended earlier than expected.

He didn’t deflect. Instead, Roupp focused on what he could control. “I feel like I made some good pitches in that inning,” Roupp said. “Just didn’t go our way.”

Manager Tony Vitello offered context on Schmitt’s misplay, noting the wind at Oracle Park was unpredictable on Monday and had affected multiple plays throughout the game. He believed Schmitt got a good jump on the ball before the conditions worked against him.

What Vitello Saw From Roupp

GettyTony Vitello of the San Francisco Giants.

Vitello was largely positive about what the 27-year-old brought to the mound despite the final result. “At times, there was moments of brilliance in there,” Vitello said, pointing to a pitch count that crept higher than ideal as the main critique. The inability to escape the fifth inning cleanly after the Giants had taken the lead was the turning point.

Roupp acknowledged it himself. He was direct about the need to shut the door when San Francisco scores and gets ahead, noting that failing to do so shifted the game’s momentum toward Arizona for good.

A Familiar Giants Pattern

Monday’s loss reflected a recurring theme for this team. Moments of genuine promise undercut by breakdowns in one area or another. The offense has been clicking recently. The defense let the pitching down on Monday. All three phases clicking simultaneously has been rare.

Roupp summed it up plainly. He said the Giants need to put small things together and they will be right there.

Logan Webb is expected back in the rotation this week following his rehab start in Sacramento. His return gives San Francisco a genuine boost at the top of the staff. But the broader consistency issue goes beyond any one pitcher.